Atom feed of this blogCheap usb rfid reader
This PN532 board has better read range than my first try, which was this RC-522 board. But, the PN532 possibly uses I2C clock stretching, which makes it fail sometimes on my Raspberry Pi 3B+. The flakiness sometimes takes hours to show up, and I couldn't find a software way to reset it short of a reboot.
What seems to work better is to make it a USB board with a CP2102 usb serial chip. Now I have [raspberry pi 3B+] -> [usb serial] -> [PN532 in UART mode]. The libnfc path for it is LIBNFC_DEFAULT_DEVICE=pn532_uart:/dev/ttyUSB0.
Here's how to connect the boards right against each other:
comments failed- HTTPConnectionPool(host='bang', port=9031): Max retries exceeded with url: /public/comments (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f0d27cac470>: Failed to establish a new connection: [Errno 111] Connection refused',))
(prev/next buttons not implemented; use search)